USES: Suitable for various aquariums, hydroponics, laboratories, and other applications. Electrode caps used for composite electrode tests should be kept dry. Avoid cross-contamination between solutions during measurement to maintain accuracy. Material: Made of PC plastic, strong and durable, with a long service life. Compatible: Designed for BNC connectors on most pH meters and controllers. Function: Composed of a glass electrode and a silver/silver chloride reference electrode. A pH meter is an electronic device used to measure pH, which indicates the concentration or activity of hydrogen ions in an aqueous solution. Description: The electrode plug should be kept clean and dry. The external reference solution for the pH electrode probe is 3M KCl. Avoid cross-contamination between solutions during measurement to ensure accurate results. Do not immerse the electrode in hydrofluoric acid for extended periods. Typically used for liquid measurements, though specialized probes can be used for semi-solid materials. This complete pH probe system includes a glass electrode connected to a meter for measuring and displaying pH readings. Feature: pH Electrode Probe Color: Light blue Material: PC plastic Size: 14.5 x 2 x 2 cm / 5.71 x 0.79 x 0.79 inches pH Test Range: 0.00–14.00 Response Time: ≤ 1 minute Working Temperature: 0–60°C Cable Length: 70 cm / 27.56 inches Package Includes: 1 x pH Electrode Probe